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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.
Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload pr 3120-N521-P7T1-W19DG4-20A E-T-A 1: £38.29 3In Stock 30On Order	Mfr. Part No. 3120-N521-P7T1-W19DG4-20A Mouser Part No 457-3120N52119DG420A	E-T-A	Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload pr	Datasheet	3In Stock 30On Order On Order Ship Dates Mfr. No: 3120-N521-P7T1-W19DG4-20A Stock: 3 Can Dispatch Immediately On Order: 10 Expected 13/11/2026 20 Expected 25/12/2026 Factory Lead Time: 12 Weeks	£38.29 £31.77 £29.90 £25.39 View £22.66 £22.40 Quote	Min.: 1 Mult.: 1
Circuit Breakers The 3120-N...4 IP65 rated thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N...4 is ideally suite 3120-N314-P7T1-W04X-16A E-T-A 1: £27.06 3In Stock	Mfr. Part No. 3120-N314-P7T1-W04X-16A Mouser Part No 457-314P7T1W04X16A	E-T-A	Circuit Breakers The 3120-N...4 IP65 rated thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N...4 is ideally suite Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	3In Stock	£27.06 £22.44 £18.51 £17.78 View £15.72 £15.43 £15.22 Quote	Min.: 1 Mult.: 1
Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot 3120-N321-H7T1-W01F-20A E-T-A 1: £27.81 9In Stock	Mfr. Part No. 3120-N321-H7T1-W01F-20A Mouser Part No 457-321H7T1W01F20A	E-T-A	Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	9In Stock	£27.81 £25.55 £21.71 £21.07 £18.45	Min.: 1 Mult.: 1
Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot 3120-N323-P7T1-W19FG4-5A E-T-A 1: £38.29 3In Stock	Mfr. Part No. 3120-N323-P7T1-W19FG4-5A Mouser Part No 457-323P7T1W19FG45A	E-T-A	Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	3In Stock	£38.29 £25.74 £25.73 £25.39 View £22.66 £22.40 Quote	Min.: 1 Mult.: 1
Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot 3120-N32A-P7T1-W12DY3-1A E-T-A 1: £50.71 8In Stock	Mfr. Part No. 3120-N32A-P7T1-W12DY3-1A Mouser Part No 457-32AP7T1W12DY31A	E-T-A	Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	8In Stock	£50.71 £42.07 £34.98 £30.71 £27.49	Min.: 1 Mult.: 1
Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload pro 3120-N351-P7T1-W01D-10A E-T-A 1: £26.43 8In Stock	Mfr. Part No. 3120-N351-P7T1-W01D-10A Mouser Part No 457-351P7T1W01D10	E-T-A	Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload pro Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	8In Stock	£26.43 £21.92 £17.86 £17.46 View £15.34 £15.15 £15.02 Quote	Min.: 1 Mult.: 1
Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload protection of motors 3120-N521-P7T1-W01D-9A E-T-A 1: £33.40 8In Stock	Mfr. Part No. 3120-N521-P7T1-W01D-9A Mouser Part No 457-521P7T1W01D9	E-T-A	Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload protection of motors Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	8In Stock	£33.40 £27.71 £22.69 £22.34 View £19.71 £19.47 £19.41 Quote	Min.: 1 Mult.: 1
Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot 3120-N523-P7T1-W01D-10A E-T-A 1: £33.40 10In Stock	Mfr. Part No. 3120-N523-P7T1-W01D-10A Mouser Part No 457-523P7T1W01D10	E-T-A	Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	10In Stock	£33.40 £27.71 £25.56 £22.34 View £19.69 £19.47 £19.38 Quote	Min.: 1 Mult.: 1
Circuit Breakers The 3120-N...4 IP65 rated thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N...4 is ideally sui 3120-N554-P7T1-W15DY3-5A E-T-A 1: £35.21 7In Stock	Mfr. Part No. 3120-N554-P7T1-W15DY3-5A Mouser Part No 457-554P7T1W15DY35A	E-T-A	Circuit Breakers The 3120-N...4 IP65 rated thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N...4 is ideally sui Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	7In Stock	£35.21 £29.21 £23.86 £23.48 View £20.73 £20.46 £20.40 Quote	Min.: 1 Mult.: 1
Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot 3120-N561-N7Q1-W14DR3-16A E-T-A 1: £23.78 2In Stock	Mfr. Part No. 3120-N561-N7Q1-W14DR3-16A Mouser Part No 457-561N7Q1W14DR316	E-T-A	Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	2In Stock	£23.78 £19.73 £16.16 £14.24 View £12.06 £11.85	Min.: 1 Mult.: 1
Circuit Breakers Single, two and three pole rocker switch/thermal trip free circuit breakers (S-type TO CBE to EN 60934) of compact design for snap-in panel mounting. Available either with protection on one/both/all poles or, in the case of the double 3130-F110-P7T1-W01Q-15A E-T-A 1: £21.90 9In Stock	Mfr. Part No. 3130-F110-P7T1-W01Q-15A Mouser Part No 457-0F110P7T1W01Q15A	E-T-A	Circuit Breakers Single, two and three pole rocker switch/thermal trip free circuit breakers (S-type TO CBE to EN 60934) of compact design for snap-in panel mounting. Available either with protection on one/both/all poles or, in the case of the double	Datasheet	9In Stock	£21.90 £18.17 £16.63 £15.87 View £15.28 £14.91 £14.56	Min.: 1 Mult.: 1
Circuit Breakers Single, two and three pole rocker switch/thermal trip free circuit breakers (S-type TO CBE to EN 60934) of compact design for snap-in panel mounting. Available either with protection on one/both/all poles or, in the case of the double 3130-F110-P7T1-W04Q-12A E-T-A 1: £22.69 9In Stock	Mfr. Part No. 3130-F110-P7T1-W04Q-12A Mouser Part No 457-0F110P7T1W04Q12A	E-T-A	Circuit Breakers Single, two and three pole rocker switch/thermal trip free circuit breakers (S-type TO CBE to EN 60934) of compact design for snap-in panel mounting. Available either with protection on one/both/all poles or, in the case of the double	Datasheet	9In Stock	£22.69 £19.49 £15.64 £14.68 View £14.04 £13.49 £13.03 Quote	Min.: 1 Mult.: 1
Circuit Breakers Single, two and three pole rocker switch/thermal trip free circuit breakers (S-type TO CBE to EN 60934) of compact design for snap-in panel mounting. Available either with protection on one/both/all poles or, in the case of the double 3130-F110-P7T1-W04Q-15A E-T-A 1: £22.69 9In Stock	Mfr. Part No. 3130-F110-P7T1-W04Q-15A Mouser Part No 457-0F110P7T1W04Q15A	E-T-A	Circuit Breakers Single, two and three pole rocker switch/thermal trip free circuit breakers (S-type TO CBE to EN 60934) of compact design for snap-in panel mounting. Available either with protection on one/both/all poles or, in the case of the double	Datasheet	9In Stock	£22.69 £18.82 £15.41 £13.59 View £12.88 £12.42	Min.: 1 Mult.: 1
Circuit Breakers Single, two and three pole rocker switch/thermal trip free circuit breakers (S-type TO CBE to EN 60934) of compact design for snap-in panel mounting. Available either with protection on one/both/all poles or, in the case of the double 3130-F120-P7T1-W14QR7-16A E-T-A 1: £68.50 12In Stock	Mfr. Part No. 3130-F120-P7T1-W14QR7-16A Mouser Part No 457-120P7T1W14QR716A	E-T-A	Circuit Breakers Single, two and three pole rocker switch/thermal trip free circuit breakers (S-type TO CBE to EN 60934) of compact design for snap-in panel mounting. Available either with protection on one/both/all poles or, in the case of the double	Datasheet	12In Stock	£68.50 £29.52 £28.50	Min.: 1 Mult.: 1
Circuit Breakers Single pole thermal circuit breaker with push-to-reset, tease-free, trip-free, snap action mechanism (R-type TO CBE to EN 60934; M-type when fitted with optional manual release feature). Available in versions for plug-in or integral m 127-P10-H-KF-8A E-T-A 1: £37.46 5In Stock	Mfr. Part No. 127-P10-H-KF-8A Mouser Part No 457-127-P10-H-KF-8A	E-T-A	Circuit Breakers Single pole thermal circuit breaker with push-to-reset, tease-free, trip-free, snap action mechanism (R-type TO CBE to EN 60934; M-type when fitted with optional manual release feature). Available in versions for plug-in or integral m	Datasheet	5In Stock	£37.46 £31.08 £28.66 £24.80 View £21.88 £20.70 £20.65 Quote	Min.: 1 Mult.: 1
Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot 3120-N301-N7Q1-W01D-16A E-T-A 1: £24.32 9In Stock	Mfr. Part No. 3120-N301-N7Q1-W01D-16A Mouser Part No 457-301N7Q1W01D16A	E-T-A	Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	9In Stock	£24.32 £20.18 £16.53 £14.57 View £12.34 £12.12	Min.: 1 Mult.: 1
Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot 3120-N311-P7T1-W14XR3-15A E-T-A 1: £28.22 9In Stock 10Expected 30/10/2026	Mfr. Part No. 3120-N311-P7T1-W14XR3-15A Mouser Part No 457-311P7T1W14XR315	E-T-A	Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	9In Stock 10Expected 30/10/2026	£28.22 £23.41 £19.02 £18.60 View £16.30 £16.12 £16.04 Quote	Min.: 1 Mult.: 1
Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot 3120-N321-P7T1-W12DY3-16A E-T-A 1: £38.30 3In Stock	Mfr. Part No. 3120-N321-P7T1-W12DY3-16A Mouser Part No 457-3120N32112DY316A	E-T-A	Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot	Datasheet	3In Stock	£38.30 £28.32 £26.33 £23.67 £22.29	Min.: 1 Mult.: 1
Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot 3120-N321-P7T1-W01D-0.5A E-T-A 1: £39.30 12In Stock	Mfr. Part No. 3120-N321-P7T1-W01D-0.5A Mouser Part No 457-321P7T1W01D0.5A	E-T-A	Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	12In Stock	£39.30 £33.49 £32.06 £29.75 View £26.60 £26.26 Quote	Min.: 1 Mult.: 1
Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot 3120-N321-P7T1-W04L-10A E-T-A 1: £33.41 4In Stock	Mfr. Part No. 3120-N321-P7T1-W04L-10A Mouser Part No 457-321P7T1W04L10A	E-T-A	Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	4In Stock	£33.41 £27.72 £22.86 £20.61 £19.21	Min.: 1 Mult.: 1
Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot 3120-N321-P7T1-W04L-18A E-T-A 1: £33.40 3In Stock	Mfr. Part No. 3120-N321-P7T1-W04L-18A Mouser Part No 457-321P7T1W04L18A	E-T-A	Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	3In Stock	£33.40 £27.71 £22.69 £22.34 View £19.71 £19.47 £19.41 Quote	Min.: 1 Mult.: 1
Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot 3120-N321-P7T1-W19DG3-5A E-T-A 1: £38.30 8In Stock	Mfr. Part No. 3120-N321-P7T1-W19DG3-5A Mouser Part No 457-321P7T1W19DG35A	E-T-A	Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	8In Stock	£38.30 £31.78 £26.33 £23.67 £22.29	Min.: 1 Mult.: 1
Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot 3120-N323-P7T1-W02L-5A E-T-A 1: £33.41 3In Stock 70Expected 11/12/2026	Mfr. Part No. 3120-N323-P7T1-W02L-5A Mouser Part No 457-323P7T1W02L5A	E-T-A	Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	3In Stock 70Expected 11/12/2026	£33.41 £27.72 £26.16 £23.17 £20.71	Min.: 1 Mult.: 1
Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot 3120-N521-P7T1-W02D-20A E-T-A 1: £33.41 5In Stock	Mfr. Part No. 3120-N521-P7T1-W02D-20A Mouser Part No 457-521P7T1W02D20	E-T-A	Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	5In Stock	£33.41 £27.72 £22.86 £20.61 £19.21	Min.: 1 Mult.: 1
Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot 3120-N523-P7T1-W02D-15A E-T-A 1: £33.41 3In Stock	Mfr. Part No. 3120-N523-P7T1-W02D-15A Mouser Part No 457-523P7T1W02D15	E-T-A	Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	3In Stock	£33.41 £27.72 £22.86 £20.61 £19.21	Min.: 1 Mult.: 1